Follow or Add?

[pgn]

Not sure exactly where to put this, but I am sure it will be moved if it clearly belongs elsewhere. 

I've noticed the Mobile view of the Community Forum allows you to "Follow" other forum members:

In the Full view, you can Add a forum user "to Friends":

I assume (!) these actions are synonymous, in Lithium terms. 

My question: What is the advantage of adding other members as Friends, or Following them (other than permitting them to see more of your profile or status) ? 

Buried in the mists of Lithium time...? 

[Cleoriff]

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@MI5 wrote:
You should be

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See I can't get a better recommendation than that @gmarkj

[pgn]

Stalkerish, yes...

[Cleoriff]

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@pgn wrote:

Stalkerish, yes...

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Selective though.....